Maria Callas Museum
mariacallasmuseum.gr is hard for agents to use.
Listed by OpenStreetMap.
Score over 2 scans since 2026-10-14: 44% → 53%
See what an AI agent reads on this site →
34.3 of 65 points available
agent-readiness level, Basic Web Presence
things to fix
Provisional: the action test and the assistant citation check still to come; the hatched part of the bar is not measured yet.
Since the scan of 2026-10-14: fixed No booking or ordering path at all. new Booking through an unrecognised third party.
What to fix first
- Tickets through an unrecognised third party +9 points
Check that the provider keeps you as the merchant of record. How to fix it
- No tickets and prices found +7 points
Agents answer 'what does it cost and when' from marketplaces instead. Add a page with tickets, times and prices as text and link it from the homepage. How to fix it
- The server turns AI crawlers away at the door +6.7 points
Live fetches as GPTBot (challenge:attention required), ClaudeBot (challenge:attention required) were refused while a normal browser got the page. This is usually a hosting or firewall bot list the owner never chose. Ask the host to allow these user agents. How to fix it
- Structured data is incomplete +5 points
Missing: address, opening hours. How to fix it
No one is listed yet to fix this in Athens tours, attractions and museums. List your agency or yourself: free, reviewed by hand.
Already right
- robots.txt lets AI crawlers in No rule blocks the key AI user agents.
- Structured data present (Organization) phone
Builder: wordpress · Front: cloudflare · Cloudflare in front; AI crawlers blocked at the edge
What to paste
Filled from the business's own record and this scan. Check every line before it goes live; where it goes on wordpress is in the guides.
Show the code to paste
Structured data (JSON-LD)
One block in the page's head, or in the builder's custom-code slot. Replace anything that is wrong. Guide.
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Museum",
"name": "Maria Callas Museum",
"url": "https://mariacallasmuseum.gr/en/",
"telephone": "+30 210 4404204",
"address": {
"@type": "PostalAddress",
"streetAddress": "Μητροπόλεως 44",
"addressLocality": "Athens"
},
"geo": {
"@type": "GeoCoordinates",
"latitude": 37.9755243,
"longitude": 23.7307862
}
}
</script>
How Maria Callas Museum compares
28 of 77 in Athens tours, attractions and museums
Top 36% of the sites scanned in this index. Just above: Book4 travel D, Μουσείο Τηλεπικοινωνιών ΟΤΕ D. Just below: Μουσείο Γουλανδρή Φυσικής Ιστορίας D, Blank Wall Gallery D.
| What the top tenth of the index does | Top 10% | This site |
|---|---|---|
| Take bookings or orders on their own domain | 80% | no |
| Publish the menu or price list as HTML | 60% | no |
| Let AI crawlers in (no edge block, no robots.txt block) | 90% | no |
| Structured data with address, phone and hours | 20% | no |
| Have an llms.txt | 40% | yes |
The top tenth is the 10 best-scoring reachable sites of the index at the last refresh.
Against its peers
| Average score | A or B | This site | |
|---|---|---|---|
| Sites built with WordPress 36,926 sites | 58% | 29% | 52.8% |
Nearest places in the index
| Place | Distance | Grade | Direct booking or ordering |
|---|---|---|---|
| Tina Travel | 210 m | C | yes |
| Αρχοντικό Μπενιζέλων | 217 m | F | no |
| Εθνικό Ιστορικό Μουσείο | 295 m | D | yes |
| Εβραϊκό Μουσείο Ελλάδος | 358 m | F | no |
| Lumen Travel | 372 m | D | no |
| Μουσείο Φρυσίρα | 416 m | D | no |
| Μουσείο Νεότερου Ελληνικού Πολιτισμού | 500 m | F | no |
| Ίδρυμα Παύλου και Αλεξάνδρας Κανελλοπούλου | 501 m | F | no |
| Το Σπίτι του Ελύτη | 510 m | C | no |
| TravelIdea | 629 m | C | no |
Businesses like Maria Callas Museum in Athens tours, attractions and museums
| Group | Sites | Avg score | A or B | This site |
|---|---|---|---|---|
| Same kind in Athens tours, attractions and museums | 77 | 45% | 9% | 52.8% |
| Built with WordPress in Athens tours, attractions and museums | 47 | 52% | 15% | 52.8% |
The best of Built with WordPress in Athens tours, attractions and museums
Travelspot B 84.6% · Symiacos Travel B 83.1% · filippis tours B 78.8% · Βοτανικός Κήπος Διομήδους B 78.8% · Tsokas Travel B 77.5%
The climb
With the three fixes above (Tickets through an unrecognised third party; No tickets and prices found; The server turns AI crawlers away at the door) the score would be about 87.7%: first of 77 in Athens tours, attractions and museums.
Peers are the businesses of the same index with a reachable site, latest scan of each; the rank uses the index's current ranking.
What assistants answer
Each assistant is asked three questions about this business: the official website, where to book, where to order. The cell says where the answer sent people.
Not asked yet. Assistants are asked about the top-ranked businesses in each city index, and about every claimed business the moment it is claimed; claim this page to be included.
Own this business?
Fixed something, or think a check is wrong? Rescans are free. Claiming takes one email to confirm; after that the three assistants are asked about the business right away, the site is rescanned weekly, and you get a message only when the score changes.
Rescan now · Markdown · Dispute a check
Deep report Ten questions the way people ask, each assistant's full answer, the eight nearest similar places, the fix plan and a PDF: 19 EUR, one-off.
Send the fixes to your web person
Show the score
Owners who score well embed the badge; it links back here and updates with every scan.
<a href="https://directindex.org/r/mariacallasmuseum.gr"><img src="https://directindex.org/badge/mariacallasmuseum.gr.svg" alt="Agent-Direct Score D" width="236" height="40"></a>
What agents get, and what the site publishes
The direct record an agent is served for this business, the rails it could transact through, and the agent standards the site publishes.
Show the details
What agents get for Maria Callas Museum
No direct path on record: the scan of 2026-10-14 found no booking or ordering link on mariacallasmuseum.gr or on a vendor's site. The same record is served as JSON at /api/direct/mariacallasmuseum.gr, through the MCP tool direct_record and in the city feed /city/athens-tours/direct.json.
| Path | Link | Status |
|---|---|---|
| Book | none on record | |
| Order | none on record | |
| Menu | none on record | |
| Hours | none on record | |
| Phone | +30 210 4404204 |
Owners: claim the business below to correct this record; the claim email carries the link.
Can an agent transact?
Measured, not scored: the Agent-Direct Score stays at specification v1.0. This says which rails an agent could transact through today, and what the booking or ordering vendor's terms allow.
| UCP profile /.well-known/ucp, Google and Shopify's Universal Commerce Protocol | not measured |
| ACP discovery document /.well-known/acp.json, OpenAI and Stripe's Agentic Commerce Protocol | not measured |
| MCP server card /.well-known/mcp/server-card.json | no |
| Ordering vendor that takes agent orders Square, Toast, or a vendor whose terms allow agents | not measured |
Not measured at this scan; the next scan measures it.
The next scan also reads the contact, menu and booking pages one hop deeper; facts found there can change the score.
Level 1 of 5, Basic Web Presence
The standards an agent looks for before it reads a page, on the same criteria as Cloudflare's Agent Readiness scan. Not part of the score; each missing item links to a how-to. Cloudflare's report.
| Link headers on the homepage | no how |
| sitemap.xml | yes |
| AI bot rules in robots.txt | yes |
| Content Signals in robots.txt | no how |
| Markdown on Accept: text/markdown | no how |
| llms.txt | yes |
| API catalog (RFC 9727) | no how |
| MCP server card | no how |
| A2A agent card | no how |
| Agent Skills index | no how |
| OAuth or OIDC discovery | no how |
| OAuth protected resource metadata | no how |
| auth.md | no how |
| Web Bot Auth key directory | no how |
| ARD capability manifest | no how |
| DNS-AID records | no how |
| WebMCP tools on the page | no how |
| JSON-LD for the business | yes |